Browsing by Author "Goba, Makabongwe Mkhululi"

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    Laser light treatment of glass fibres
    (Technická Univerzita v Liberci, 2011-01-01) Goba, Makabongwe Mkhululi; Wiener, Jakub
    Glass fibres have many industrial applications such as filtration media and composite materials. Glass fibre applications are generally based on the type of glass fibre, constitutional composition, and the structural ordering of the glass fibres in the final structure, such as nonwoven glass fibre mats used as filtration media. Nonwoven glass fibre mats may be available in variable thickness dimensions. Glass fibre is a dielectric material and is therefore able to absorb energy from a carbon dioxide laser light beam. The carbon dioxide laser produces many watts in a single spatial mode that is then concentrated on a small area. The energy produced is in the thermal infrared region at approximately 10.6?m. When glass fibres absorb heat energy from the carbon dioxide laser beam they heat up, melt and then change definition, depending on the amount, rate and how the energy is applied. The main objective of this research was to determine the thermal effects caused by the laser light beam produced by the carbon dioxide laser on the glass fibre mat, and to determine incorporation of metal oxides during laser light beam treatment
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    Laser light treatment of glass fibres
    (2011-01-01) Goba, Makabongwe Mkhululi